Best CD transport?

The Esoteric may be overkill with it's digital input, superior DAC, and better jitter control than the Rotel.
Oppo and Sony make good transports and the Oppo can stream content. What's you budget?

Dfwlistener, if it were me & I was on a budget I would consider selling your Rotel dac, buying a new Sony XA-5400ES & sending it to Modwright to get the Ultimate Truth mod which should out-perform anything around that price point. And the Modwright Sony XA-5400ES would be a much better SACD player compared to a stock Oppo 105 connected dac-out to your Rotel dac. That also gives you the flexibility to roll the stock tubes with upgraded NOS tubes as recommended by Dan Wright to get a different/better sound. I know Arnie Nudell is a big fan. Just food for thought.

If I understand the OP correctly, he wants to play CDs (using a transport) and continue to play files from his Mac Mini thru the same DAC.

A Modwright Oppo would be a less expensive option. But if budget permits, then the Sony would be a great way to go.

I just realised that your Rotel DAC cannot input SACD. Don't know if that's important to you.

The Esoteric may be overkill, but the OP just asked for the best CDP to use as a transport. We all know there is no best, of anything. However, he also gave no price range, so we can't assume he meant best budget transport either. If he has a budget, and would like recommendations within that budget, he should probably clarify that, and not ask for best recommendations. Best recommendations come with unlimited budgets.

Sorry guys. You are definitely correct that I forgot to specify budget. I was thinking something in the $1k to $2k range. The choice as I see it would be to just buy the Oppo at $1200 to play CDs and SACDs and A/B the two DACs or buy a decent CD or CD/SACD player in the same price range to use as a transport. If the Oppo sounded better with downloaded HD files then I would just sell the Rotel.